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P. TONNAR. SHBDDING MECHANISM FOR LOOMS.

No. 445,098. Patented Jan. 20, 1891.

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SHEDDING MECHANISM FOR LOOMS.

No. 445,098. Patented Jan. 20,1891.

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SHEDDING MECHANISM FOR LOOMS. No. 445,098. Patented Jan. 20, 1891.

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SHEDDING MECHANISM FOR LOOMS. N0. 445,098. Patented Jan. 20,1891,

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(No Model.) 7 5 Sheets-Sheet 5 F. TONNAR. SHEDDING MECHANISM FOR LOOMS.

No. 445,098. Patented Jan. 20, 1891.

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FELIX. TONNAR, OF DULKEL', GERMANY.

SPECIFICATION forming part of Letters Patent No. 445,098, dated January 20, 1891.

A li tion fil d September 25, 1889. Serial No. 325,005. (No model.) Patented in England August 30, 1889, No. 13,728.

To aZZ whom it may concern:

Be it known that I, FELIX TONNAR, of the city of Dillken, in the Kingdom of Prussia and German Empire, have invented certain new and useful Improvements in Shedding Mechanisms for Looms, (for which I have obtained Letters Patent in Great Britain, No. 13,728, dated August 30, 1889,) of which the following is a specification, reference being had therein to accompanying drawings.

This invention relates to new and useful improvements in shedding mechanism for looms; and it consists in certain details of construction hereinafter described and claimed, reference being had to the accompanying drawings, in Which- Figurelis a longitudinal section of my improved shedding mechanism for looms. Fig. 2 is a section on the line a; of Fig. 1. Fig. 3 is a plan of the same. Fig. e is a detail, partly in section. Fig. shows a modification, and Fig. 0 the general arrangement of my improved shedding mechanism.

The frame consists of two side parts A, connected by cross-bars B.

a is a bar on which the angle-levers a are fulcrumed, the latter being connected with the harness-shafts M above and below by means of strings a Fig. 0.

b are arms movably fastened to the angle levers a at a and connecting the same with the actuating mechanism in such a way as to receive from the latter a reciprocating movement and impart a corresponding movement to the shafts for forming the shed. The said arms Z) are each provided with a pin 1), which loosely engages with the side surface of one of the cog-wheels c, journaled on pins d of the lovers (1, the said levers being fulcrumed at (1 Each said lever 61 is also provided with a pin d resting in a semicircular slot 0, formed in the cog-wheel c for the purpose of limiting the rotary movement of the latter.

k is a frame arranged below the levers d, capable of being lifted and lowered by means of an eccentric Z Fig. 2, mounted on the axis 7L2 of a toothed cylinder g. A number of angular catches 0 are fulcrumed to a bar m on the said frame 79 in such a manner as to lean against a cross-piece 72 Fig. 3, on the same.

5 is a second frame carrying a hexagonal pattern cylinder 1), capable of being lifted and lowered by the eccentric 6 also mounted on the axis 76 an arm 19 of the said frame 8 resting on the said eccentric The cards of the pattern-chain g han ing on the patterncylindcr 17 are either provided with a hole or blank. If the pattern-card appearing below the horizontal arm of one of the angular catches from below, after a turn of the pattern-card, be a blank-that is to say, without a hole-then the horizontal arm of the angular catch will be raised by means of one of the pins 0 )rovided with a head and loosely sliding in a projecting portion 0 formed on the frame k thus causing the respective vertical arm of the said angular catch to be brought under a shoulder 0' of the corresponding lever (Z upon the frame and the lever (1 now being raised by the eccentric Z the cog-wheel c is likewise raised and made to engage with a toothed cylinder f arranged above it and continuously rotating, the said cog-wheel being kept in position for engagement with the said toothed cylinder as long as required by the eccentric Z. The frame 5 and the pattern-cylinder p actuated by the eccentric t thereupon, being lowered, one of the pegs n on the pattern-cylinder is caught by a hook v of a pawl LL/3, causing the pattern=-cylinder to be rotated to the extent of one-sixth of its circumference. thereby bringing a new card on the upper surface of the said pattern-cylinder. Supposing that the card now brought to the top have a hole, then the cog-wheel c is permitted to engage with the toothed cylinder g, arranged below it on the axis 7L2 and rotating in an opposite direction to that of the other toothed cylinder f. By drawing the fork 10 to the right or left by means of a string the pattern-cylinder may be caused to rotate to the right or left, as the case may be.

In the modified arrangement shown in Fig. 5 the forked pawl 20 is actuated by two camwheels .2 and s, mounted on the axis of the toothed cylinder f, the said pawl being fulcrumed at 00 and forked at its other end, and each of the ends x 00 being provided with a roller. The end as engages with the cam-wheel z or the other end 50 engages with the camwheel 2, as may be desired, the said camwheels being so col'istructed as to cause either the one or the other of the hooks c of the pawl w to come in contact with a peg a of the pattern-cylinder p thereby rotating the latter when the same is to come into action. A spring 20 is applied either at 00' or at r this depending upon the direction in which the pattern-cylinder is to be rotated. The spring 10* is shown in Fig. 5 as applied at 7J3, thereby bringing the end so into operation on the cam .2 and causing an intermittent movement of the pattern-cylinder p in the direction of the arrow. Both hooks n will pass the pegs if, when the arms 00 and m engage with the non-depressed portion of the cams, which occurs when the pattern-cylinder p is in its upward movement, thus preventing the hooks e from interfering. If it is desired to rotate the pattern-cylinder in the opposite direction to that indicated by the arrow, the spring to should be applied to arm w.

The toothed cylinders f and g are rotated in opposite directions from the conical wheels i i of a shaft 2', each revolution of the said conical wheels corresponding to a revolution of the loom. The number of teeth on either of the said cylinders f and 9, however, being but half that of the number on the intermediate cog-wheel c, the latter can only make half a revolution to each revolution of the said toothed cylinders. Thus when the anglelever a is to be moved, say, to the position indicated at a one of the angular catches 0 must be brought under the lever (Z, in order to bring the cog-wheel c to engage with the toothed cylinder f, rotating in the direction opposite to the hands of a clock. On the other hand, when the angle-lever a is to be moved the other way it will be necessary that none of the angular catches come below the lever d, so as to allow the cog-wheel c to engage with the toothed cylinder g, rotating in an opposite direction. The extent of the free space or toothless portion to be left or the diameter of the toothed cylinders f and 9 depends upon the speed at which the shafts are to form the shed. In order to secure a slow movement of the shafts, the free space, and hence also the diameter of the toothed cylinders, will have to be as small as possible, the number of teeth of the said cylinders always being half that of the number on the cogwheel 0.

v For the purpose of setting the angledcvers a and the shafts at rest for several shots of the loom when at the end of their movement, or, in other words, permitting the shafts to remain in position at the end of their upward or downward movements, the loom meanwhile making several picks, the wheels 0 have certain teeth omitted at opposite points on the peripheries thereof to permit the said wheels to run out of mesh with the cylinders f g after moving to the necessary extent to raise or lower the shafts. The cog-wheels c and the levers d are held in their highest as well as in their lowest position by catches h striking against shoulders of the said levers (Z, the said catches 71. being drawn by a spring h and released by means of an eccentric 7r and lever 7L3. As soon as the levers (Z or the cog-wheels c are raised or lowered the catch h is disengaged through the eccentric 7L4.

Below the levers (Z a slide 7.5, Fig. l, may be preferably arranged for bringing the said levers d from their lowest position into their uppermost position by drawing the said slide outward. By this means the same result may be obtained as by means of a patternchain. On rotating the loom to the extent of oneshot at this position of the machine all the shafts .of the lower shed will be lifted, the position of the shafts thus obtained being the most favorable one for drawing in the warp. In order to allow; of performing this manipulation without requiring to rotate the loom at all, I arrange a coupling i Fig. 6, on the shaft "i by means of which the machine maybe uncoupled from the loom. Thus when rearranging the weft the machine may be simply driven by hand by tnrnin g the crank g, Fig. 2, arranged on the side of the lower toothed cylinder g, and the shafts may thus be moved.

In rearranging the weft and taking out weft-threads the pattern-cylinder must be rotated in an opposite direction, this being effected by reversing the pawl w".

Ilavin thus fully described and ascertained the nature of my invention and the manner in which the same is to be performed, what I claim is 1. In a loom, the combination of a series of vertically-movable gear-wheels, the constantly-revolving toothed cylinders, one of which is mounted above and the other below said gears, a series of levers for carrying said gears, a pattern-cylinder, a series of catches actuated by the pattern-cylinder to engage the gearcarrying levers, a series of pins acting on said catches, a series of arms carrying pins to engage the gears, a series of angle-levers actuated by said arms, the frames [63 s and mechanism for actuating said frames, substantially as described.

2. In a loom, the combination of the constantly-revolving toothed cylinders, a series of vertically-movable gear-wheels intermediate said cylinders, a series of levers for carrying said gear-wheels, a pattern-cylinder, a vertically-movable frame 8 for carrying the pattern-cylinder, the frame 70 means for actuatin g said frames, and a series of catches actuated by the pattern-cylinder to engage the gear carrying levers, substantially as described.

3. In a loom, the combination of a series of levers, gear-wheels carried thereby, constant- -ly-re\-'olvin;, cylinders, one mounted above and the other below saidgears, a cam-operated pattern-cylinder, a cam-operated liftingframe, and catches on said lifting-frame operated by said pattern-cylinder to engage with the levers and bring the gears into engagement with either of the cylinders, substantially as described.

4. In a loom, the combination of a series of levers, a series of mutilated gears carried thereby, the constantly-revolving toothed cyl-- inders, one of which is mounted above and the other below said gears, a series of arms carrying pins adapted to engage the gears, a series of angle-levers actuated by said arms, a pattern-cylinder, the frames 70 8 means for actuating said frames, and a series of catches carried by one of said frames and actuated by the pattern-cylinder to engage the gear-carrying levers, substantially as described.

5. In a loom, the combination of a series of levers, gears carried thereby, cylinders above name to this specification in the presence of 7 two subscribing Witnesses.

FELIX TONNAR. Witnesses:

K. E. DETZNER, H. E. SCHMIDT. 

